各位烤鸭大家好，本期是我们雅思阅读话题背景补充系列文章的第7篇，话题到底是什么呢？所以到底怎么样，我们才能保持身体健康呢？这次启德考培北京分校我们就聊聊雅思阅读中医（chang）疗（sheng）健（bu）康（lao）相关的话题吧~

（选自剑6 test 3 reading passage 3）

段落原文

Unfortunately, for maximum benefit, people would probably have to reduce their caloric intake by roughly thirty per cent, equivalent to dropping from 2,500 calories a day to 1,750. Few mortals could stick to that harsh a regimen, especially for years on end. But what if someone could create a pill that mimicked the physiological effects of eating less without actually forcing people to eat less? Could such a ‘caloric-restriction mimetic’, as we call it, enable people to stay healthy longer, postponing age-related disorders (such as diabetes, arteriosclerosis, heart disease and cancer) until very late in life?

Scientists first posed this question in the mid-1990s, after researchers came upon a chemical agent that in rodents seemed to reproduce many of caloric restriction's benefits. No compound that would safely achieve the same feat in people has been found yet, but the search has been informative and has fanned hope that caloric-restriction (CR) mimetics can indeed be developed eventually.

段落原文

不幸的是，人们需要减少30%的卡路里摄入才能达到最佳效果，这相当于从每天的2500卡路里减少到1750卡路里。很少有人可以严格遵守这种养生之道，尤其是年年如此。但如果有人制造出了一种可以模拟人类限食之后的生理效应的药物，而又不需要迫使人们限食呢？这种我们称之为“模拟卡路里限制”的药物能否让人们可以长久地保持健康、延缓老年疾病（如糖尿病、动脉硬化、心脏病、癌症）的发生直到更老的时候？

研究者们发现了一种化学试剂似乎可以在啮齿动物身上产生限制卡路里的诸多好处，之后科学家最早于上世纪90年代中期提出了该问题。目前我们还没有发现可以用在人类身上并达到同等效果的药物，但相关研究已掌握了大量信息，让我们抱有希望模拟卡路里限制的药物最终会被研发出来。

段落小结

本文主要介绍了抗衰老药物的相关理论与研究现状，而本段则介绍了研制模拟卡路里限制药物的背景。在医疗健康类的话题中，有许多需要我们认识的“陌生面孔”，我们就以这篇文章为例看看吧。

重点词汇：

[1] caloric intake, 热量摄取

[2] be equivalent to, 等于，相当于

[3] mortal, /n/, 人类，凡人；/adj/, 凡人的

[4] stick to, 坚持，黏住

[5] harsh, /adj/, 严厉的，严酷的

[6] physiological, /adj/, 生理的，生理学的（physiology, /n/, 生理学，生理机能）

[7] disorder, /n/, 混乱，骚乱，疾病；/v/, 混乱，使失调

[8] diabetes, /n/, 糖尿病

[9] agent, /n/, 药剂，代理人；/adj/, 代理的；/v/, 代理

[10] eventually, /adv/, 终于，最后

       如果想了解更多相关信息，请关注启德考培北京分校平台，免费获取备考提分解决方案，或欢迎 点击这里 进行网络咨询，我们会给您提供专业的服务。最后，预祝大家能取得理想中的成绩。